C# OpenCV学习笔记六之人脸识别/五官识别测试

1. 窗体增加Timer,PictureBox控件。设定Timer1的Enable=True

2. 参加引用

using Emgu.CV;
using Emgu.CV.Structure;
using Emgu.CV.CvEnum;
using Emgu.Util;

3. 添加如下相关代码

private Capture cap;
private HaarCascade haar;

private void timer1_Tick(object sender, EventArgs e)
{
using (Image<Bgr, byte> nextFrame = cap.QueryFrame())
{
if (nextFrame != null)
{
Image<Gray, byte> grayframe = nextFrame.Convert<Gray, byte>();

var faces = haar.Detect(grayframe, 1.4, 4, HAAR_DETECTION_TYPE.DO_CANNY_PRUNING, new Size(nextFrame.Width / 8, nextFrame.Height / 8));
foreach (var face in faces)
{
nextFrame.Draw(face.rect, new Bgr(0, double.MaxValue, 0), 3);
}
pictureBox1.Image = nextFrame.ToBitmap();
}
}

}

private void Form1_Load(object sender, EventArgs e)
{

cap = new Capture(0);
haar = new HaarCascade("C:\\opencv\\data\\haarcascades\\haarcascade_frontalface_alt2.xml");
}

4. new HaarCascade里的xml根据自己电脑的实际目录修改。

5. data\haarcascades\haarcascade*.xml说明

5.1. haarcascade_frontalface_*.xml识别脸部

5.2. haarcascade_eye*.xml眼睛识别

5.3. haarcascade_mcs_mouth.xml嘴巴识别

5.4. haarcascade_mcs_nose.xml鼻子识别

5.5. 其他xml也可测试看看，蛮好玩的。